--- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
On Sat, Aug 19, 2017 at 11:38 AM, Hrvoje Lasic <[email protected]> wrote: > Ok, so correct me if I am wrong but you are asking some mechanical > questions. mechanical / physics, yes. > so, I speak in general now and if you have question ask deeper. > > Force needed to drive whatever you want to drive will be exactly the same > at the end part of system. on the print-head yes. but because of the doubled speed, the DRIVE end *NO*, the force is NOT the same. > But efficiency of belt system could be slightly > different then efficiency of `non` pulley system (whatever it is). But > again, efficiency could be neglected for sake of easy of calculation or you > can put around some value that (guess) could be 80-90%. i'm assuming that there are no significant losses around pulley bearings. > What you will be looking is gear ratio on pulley that could alter > force/speed ratio and same thing on other system. the gear ratio on a single pulley system is 2:1. > also, you will be looking on backlash. *thinks*... backlash should be reduced (halved) due to the better effectiveness of the pulleys - assuming that there is no "play" in the bearings (we can assume decent bearings / idlers). l. _______________________________________________ arm-netbook mailing list [email protected] http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to [email protected]
